Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Patent
1997-10-28
1999-09-21
Kilner, Christopher B.
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
62643, 62924, 62927, F25J 300
Patent
active
059539364
ABSTRACT:
A technique is set forth to reduce the heat requirement of conventional distillation processes which separate feed mixtures containing three or more components. The technique provides a great deal of flexibility in adjusting the temperatures of the required utilities including a scenario where the heat requirement is reduced without a need for additional higher temperature (and more costly) heat utility. In this technique, when a liquid bottoms stream (or gaseous overhead stream) containing two or more components is sent from an earlier column to a subsequent column, then a return vapor (or liquid) stream is implemented between the same locations in the two columns.
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Agrawal Rakesh
Fidkowski Zbigniew Tadeusz
Air Products and Chemicals Inc.
Kilner Christopher B.
Wolff Robert J.
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